Mechanism for converting motion



{No Model.)

B. S. PLIMPTON.

MECHANISM FOR. CONVERTING MOTION. No. 274,374. Patents r/AV/////zWITNESSES ATTORNEYS.

' UNITED STATES PATENT OFFICE.

EDWARD S. PLIMPTON, OF DENISON, IOWA.

MECHANISM FOR CONVERTING MOTION.

SPECIFICATION forming part of Letters Patent No. 274,374, dated March20, 1883.

Application filed October 24, 1882. (No model.)

To all whom it may concern Be it known that I, EDWARD S. PLIMPTON, ofDenison, in the county of Crawford and State of Iowa, have invented anew and Improved Mechanism for Converting Motion, of

which the following is a full, clear, and exact description.

The object of my invention is to provide mechanism for converting thereciprocating motion of windmill pitman'r'ods into continuons and steadyrotary motion without deadcenters; and to that end the inventionconsists in lever mechanism constructed and arranged as hereinafterdescribed and claimed.

Reference is to be had to the accompanying drawings, forming part ofthis specificatiolnin which similarletters of reference indicatecorresponding parts in both the figures.

Figure 1 is a side elevation of the mechanism, and Fig. 2 is a sectionalplan view on line a: m of Fig.1.

A may represent the side of a building, on which is the windmill-towerB, and b the windmiILshait, from which the pitman 0 passes to a'sliderod, d, that is titted for movement in suitable guides, as usual.

c is a lever hung on a fulcrum,f, at or near its middength, andconnected at one end by a pin and slot at g. or other connection, to therod (3'.

his the shorter lever, connected'at one end by a link, i, to the outerend of lever e, and connected at its other end by a link, I, to a crankon the shaft k. The power is to be taken from this shaft k, and it isprovided with a balance-wheel, r.

m is a lever, preferably placed below shaft 70, and connected at one endby a pin and slot,

0, to slide-rod d, while its other end is connected by a link, it, to asecond crank on shaft is; or it may be connected to the crank thatlink'l is attached to, link l being connected directly to lever e inthis case. The slide-rod 11 being reciprocated, the movement therebyimparted to levers e m is transferred to the shaft k, and a continuousrotary motion of the shaft is thus obtained. The intermediate lever, h,serves to reverse the direction of the movement given by the lever 0;but the same effect will be produced by having the levers cm of adili'erent order one from the other and connecting the link I directlyto the lever 0, thus dispensing with lever h.

I do not limit myself to levers of any one order, as they may bearranged as most convenient, according to location. While power can beobtained by the use of either set of le vers separately, yet theircombined action materially reduces the dead-center resistance andproduces a more uniform stead y motion.

Having thus described myinvention, I claim as new and desire to secureby Letters Patent 1. The combination, with the slide-rod d, of thelevers e in, links 1 n, and the crank-shaft k, substantially as hereinshown and described. 6 5

2. The combination, with the slide-rod 01, the levers e h m, the links il n, and the doublecrank shaft is, substantially as herein shown anddescribed.

ED WARD S. PLIMPTON.

Witnesses:

A. J. Bonn, A. A. SEAGRAVE.

